|Courthouse|City|Street address|Jurisdiction|Dates of use|Named for|
|---|---|---|---|---|---|
|U.S. Post Office and Court House|Brattleboro|?|D. Vt.|1917–present|n/a|
|U.S. Post Office and Court House|Burlington|175 Main Street|D. Vt.|1870–1982 Destroyed by fire in 1982.|n/a|
|Federal Building, Post Office and Court House|Burlington|11 Elmwood Avenue|D. Vt.|1958-present|n/a|
|U.S. Post Office and Court House|Montpelier|?|D. Vt.|1894-1948 razed ca. 1963|n/a|
|Federal Building|Montpelier|State Street|D. Vt.|1964–1996 Still in use as a post office.|n/a|
|U.S. Court House, Post Office, and Custom House†|Newport|?|D. Vt.|1904–1948 Now the Orleans County District Court.|n/a|
|U.S. Court House and Post Office|Rutland|10 Court Street|D. Vt.|1859–1933 Now the Rutland Free Library.|n/a|
|U.S. Court House and Post Office|Rutland|?|D. Vt.|1933–present|n/a|
|U.S. Court House and Post Office|Windsor|57 Main St.|D. Vt.|1858–Present Still in use as a post office.|n/a|

Question: what is the number of u.s. courthouse and post offices now used as free library according to the dates of use in the table?
Answer: 1